Welcome to Vektor Beta-4.1!
This release includes some fairly niche but useful capabilities: you can now provide a function to be run before VK's router called an 'inspector', which allows code that can view a request without interacting with or modifying it in any way.
It also includes a SwapRouter method which allows wholesale swapping VK's router at runtime (in a concurrency-safe manner) so that the router can be changed but still get the full performance of httprouter in between swaps.
All other changes are internal!